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TEA [102]
2 years ago
6

What is the value of the expression 30 - 9+ 3 - (12 = 4)?

Mathematics
1 answer:
Flauer [41]2 years ago
8 0

Answer:

21

Step-by-step explanation:

30 - 9 +3

30 - 12

18

18 - 12=4

      12/4 = -3

18 - -3

21

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A pole that is 3.5m tall casts a shadow that is 1.7m long. At the same time, a nearby building casts a shadow that is 36.5m long
GalinKa [24]
1.)Convert into Proportion: 3.5/1.7=x/36.5
2.)Cross Multiply: 1.7x=127.75
3.)Simplify and Solve: x=75.14

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5 0
3 years ago
Put each number with the equation it goes with.
jenyasd209 [6]

Answer:

For the first box, the answer is 3.

For the second box, the answer is -1.

For the third box, the answer is 0.

I hope this helped!

8 0
4 years ago
Question 1
wlad13 [49]
You can draw vertical line, and get 2 rectangles. 
1) First one with sides 2 and 7.
2) Second one with sides 1 and (5-2) = 3,  1 and 3.

3) Area of the first one =2*7=14 units²
4)Area of the second one = 1*3=3 units²

5) Area of the whole polygon = 14+3=17 units²

Answer C. 17units².

7 0
3 years ago
Which is the graph of the following equation?
lesantik [10]

Given equation is

\frac{(x-5)^2}{16} - \frac{(y-2)^2}{9}=1

The given equation is in the form of

\frac{(x-h)^2}{a^2} - \frac{(y-k)^2}{b^2}=1

a^2= 16  , so a=4

b^2 = 9 so b= 4

The value of 'a' is greater than the value of 'b'

So it is a Horizontal hyperbola

First two graphs are horizontal hyperbola

Here center is (h,k)  

h= 5 and k =2 from the given equation

So center is (5,2)

Now we find vertices

Vertices are (h+a,k)  and (h-a,k)

We know h=5, k=2  and a=4

So vertices are (9,2)  and (1,2)

Second graph having same vertices and center

The correct graph is attached below


7 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!!!! WILL GIVE BRAINLIEST!!!!!!! AND RATING!!!!
wel
The correct answer is:  [A]:  " <span>x - 3 " .
________________________________________________</span>
6 0
4 years ago
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